<template>
  <div class="top-right-btn" :style="style">
    <el-row>
      <el-tooltip v-if="search" class="item" effect="dark" :content="showSearch ? '隐藏搜索' : '显示搜索'" placement="top">
        <el-button circle icon="Search" @click="toggleSearch()" />
      </el-tooltip>
      <el-tooltip class="item" effect="dark" content="刷新" placement="top">
        <el-button circle icon="Refresh" @click="refresh()" />
      </el-tooltip>
      <el-tooltip v-if="columns" class="item" effect="dark" content="显隐列" placement="top">
        <el-button circle icon="Menu" @click="showColumn()" />
      </el-tooltip>
    </el-row>
    <el-dialog v-model="open" :title="title" append-to-body>
      <el-transfer v-model="value" :titles="['显示', '隐藏']" :data="columns" @change="dataChange"></el-transfer>
    </el-dialog>
  </div>
</template>

<script setup lang="ts">
  import { ref, computed } from "vue";

  const props = defineProps({
    showSearch: {
      type: Boolean,
      default: true
    },
    columns: {
      type: Array as () => Array<any>
    },
    search: {
      type: Boolean,
      default: true
    },
    gutter: {
      type: Number,
      default: 10
    }
  });

  const emits = defineEmits(["update:showSearch", "queryTable"]);

  // 显隐数据
  const value = ref<any[]>([]);
  // 弹出层标题
  const title = ref("显示/隐藏");
  // 是否显示弹出层
  const open = ref(false);

  const style = computed(() => {
    const ret: any = {};
    if (props.gutter) {
      ret.marginRight = `${props.gutter / 2}px`;
    }
    return ret;
  });

  // 搜索
  function toggleSearch() {
    emits("update:showSearch", !props.showSearch);
  }

  // 刷新
  function refresh() {
    emits("queryTable");
  }

  // 右侧列表元素变化
  function dataChange(data: any) {
    for (let item in props.columns) {
      const key = props.columns[item as any].key;
      // eslint-disable-next-line vue/no-mutating-props
      props.columns[item as any].visible = !data.includes(key);
    }
  }

  // 打开显隐列dialog
  function showColumn() {
    open.value = true;
  }

  // 显隐列初始默认隐藏列
  for (let item in props.columns) {
    if (props.columns[item as any].visible === false) {
      value.value.push(parseInt(item));
    }
  }
</script>

<style lang="scss" scoped>
  :deep(.el-transfer__button) {
    border-radius: 50%;
    display: block;
    margin-left: 0px;
  }

  :deep(.el-transfer__button:first-child) {
    margin-bottom: 10px;
  }

  .my-el-transfer {
    text-align: center;
  }
</style>
